1.425V to 3.6V Input, 2A,
0.2V Dropout LDO Regulators
Pin Description
MAX8526
1
2–5
6, 7, 14
8
9
10–13
—
—
PIN
MAX8527
1
2–5
7, 14
8
9
10–13
6
—
—
MAX8528
1
2–5
6, 14
8
9
10–13
—
7
NAME
FUNCTION
EN
IN
T.P.
GND
FB
OUT
Enable Input. Set low to place the device in low-current shutdown mode. Set
high for normal operation.
Regulator Input. VIN can range from 1.425V to 3.6V. Bypass with a 2.2µF or
higher ceramic capacitor to GND.
Test Pin
Ground
Feedback Pin. Connect to output through a voltage-divider to set the output.
Regulator Output. Bypass with a 10µF ceramic capacitor to GND (a smaller
capacitor can be used if maximum load is less than 2A, i.e., COUT = IOUT (max)
x (1µF/200mA).
POK
Power-OK Output (MAX8527 Only). Open-drain output. Connect to a positive
supply with a pullup resistor. If not used, leave pin unconnected. See the
Detailed Description for more details.
POR
Power-On Reset Output. Open-drain output. Connect to a positive supply with
a pullup resistor. If not used, leave pin unconnected. See the Detailed
Description for more details.
EP
Exposed Pad on the Underside of the Package. Solder to the ground plane for
proper heat dissipation.
Functional Diagram
IN
OVERTHERMAL
PROTECTION
EN
SHUTDOWN
LOGIC
0.50V
REF 0.55V
0.45V
THRESHOLD
UNDERVOLTAGE
LOCKOUT
ERROR AMP
WITH
SOFT-START
MOS DRIVER
WITH ILIMIT
MAX8526
MAX8527
MAX8528
OUT
FB
POK
(MAX8527 ONLY)
POR
(MAX8528 ONLY)
GND
6 _______________________________________________________________________________________